iPhone 5 users are the "hungriest" mobile data consumers, while Samsung Galaxy S3 owners are the biggest uploaders of photos, videos and other files from their device, a new report has revealed.

After studying 125 different devices and "billions of mobile connections", the Arieso agency found that iPhone users again proved the biggest data demanders - and iPhone 5 users are pushing the needle even further.

Arieso discovered that 40% of all mobile data is being consumed by 1% of 'power users', but it also noted that LTE 4G networks are "starting to take the strain".

Last year, the study revealed that 1% of users consumed 50% of all downlink data on 3G/UMTS networks.

Arieso said that the introduction of LTE 4G in many more territories over the past 12 months, including more parts of Europe, has injected much-needed bandwidth that "relieves pressure on UMTS networks".

However, the agency warned that LTE alone will not meet the ever-growing demand from the proliferation of data-hungry devices.

"For three years now we've seen how greater technical capabilities lead to greater data consumption by consumers," study author and Arieso chief technical officer, Dr. Michael Flanagan, said.

"From our own experience helping operators around the world prepare their networks for evolving user demands, we hypothesise that LTE alone won't 'solve' the data problem - it will exacerbate it."